package cn.wolfcode.wolf2w.service.impl;

import cn.wolfcode.wolf2w.domain.Destination;
import cn.wolfcode.wolf2w.domain.Strategy;
import cn.wolfcode.wolf2w.domain.Travel;
import cn.wolfcode.wolf2w.exception.LogicException;
import cn.wolfcode.wolf2w.query.TravelCondition;
import cn.wolfcode.wolf2w.query.TravelQueryObject;
import cn.wolfcode.wolf2w.repository.TravelRepository;
import cn.wolfcode.wolf2w.service.IDestinationService;
import cn.wolfcode.wolf2w.service.ITravelService;
import cn.wolfcode.wolf2w.service.IUserInfoService;
import cn.wolfcode.wolf2w.util.DBHelp;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.util.Date;
import java.util.List;
import java.util.Optional;

@Service
//@Transactional
public class TravelServiceImpl implements ITravelService {


    @Autowired
    private TravelRepository repository;
    @Autowired
    private MongoTemplate template;
    @Autowired
    private IUserInfoService userInfoService;
    @Autowired
    private IDestinationService destinationService;

    @Override
    public void save(Travel travel) {
        travel.setId(null);
        repository.save(travel);

    }

    @Override
    public void update(Travel travel) {
        repository.save(travel);

    }

    @Override
    public void delete(String id) {
        repository.deleteById(id);

    }

    @Override
    public Travel get(String id) {

        Optional<Travel> op = repository.findById(id);
        if (op.isPresent()){
            Travel travel = op.get();
            travel.setAuthor(userInfoService.get(travel.getUserId()));
            travel.setDest(destinationService.get(travel.getDestId()));
            return travel;
        }
        return null;
    }

    @Override
    public List<Travel> list() {
        return repository.findAll();
    }

    @Override
    public Page<Travel> query(TravelQueryObject qo) {

        //MQL语句拼接
        Query query = new Query();

        //分页查询语句
        if (StringUtils.hasLength(qo.getDestId())){
            query.addCriteria(Criteria.where("destId").is(qo.getDestId()));
        }
        //查询天数
        TravelCondition day = TravelCondition.DAY_MAP.get(qo.getDayType());
        if (day!=null){
            query.addCriteria(Criteria.where("day").gte(day.getMin()).lte(day.getMax()));
        }
        //人均消费
        TravelCondition per = TravelCondition.PEREXPEND_MAP.get(qo.getPerExpendType());
        if (per!=null){
            query.addCriteria(Criteria.where("perExpend").gte(per.getMin()).lte(per.getMax()));
        }

        Pageable pageable = null;
        if (qo.getOrderType() == 1){
            pageable = PageRequest.of(qo.getCurrentPage() - 1, qo.getPageSize(),
                    Sort.Direction.DESC, "createTime");
        }else if(qo.getOrderType() == 2){
            pageable = PageRequest.of(qo.getCurrentPage() - 1, qo.getPageSize(),
                    Sort.Direction.DESC, "viewnum");
        }else {
            pageable = PageRequest.of(qo.getCurrentPage() - 1, qo.getPageSize(),
                    Sort.Direction.ASC, "_id");
        }

        Page<Travel> page = DBHelp.query(template, Travel.class, pageable, query);

        for (Travel travel : page) {
            travel.setAuthor(userInfoService.get(travel.getUserId()));
        }
        return page;
    }

    @Override
    public void saveOrUpdate(Travel travel) {

        //目的地名称
        Destination destination = destinationService.get(travel.getDestId());
        travel.setDestName(destination.getName());
        //用户id

        //创建时间
        travel.setCreateTime(new Date());
        //最后更新时间
        travel.setLastUpdateTime(new Date());

        if (StringUtils.hasLength(travel.getId())){
            //更新
            this.update(travel);
        }else {
            //添加
            this.save(travel);

        }
    }

    @Override
    public void audit(String id, int state) {
        //是否满足审核条件
        Travel travel = this.get(id);
        if (travel == null || travel.getState() != Travel.STATE_WAITING){
            throw new LogicException("参数异常");
        }

        if (state == Travel.STATE_RELEASE){
            //改变审核状态为通过
            travel.setState(Travel.STATE_RELEASE);
            //更新发布时间
            travel.setReleaseTime(new Date());
            //最后更新时间
            travel.setLastUpdateTime(new Date());

            this.update(travel);
        }else if (state == Travel.STATE_REJECT)
            //改变审核状态为拒绝
            travel.setState(Travel.STATE_REJECT);
            travel.setReleaseTime(null);
            travel.setLastUpdateTime(new Date());

            this.update(travel);
        }

    @Override
    public List<Travel> queryViewnumTop3(String destId) {
        //点击量排序
        Pageable pageable = PageRequest.of(0, 3, Sort.Direction.DESC,"_id");
        //通过目的地id查询
        List<Travel> list = repository.findByDestId(destId,pageable);
        return list;
    }

    @Override
    public List<Travel> queryByDestId(String destId) {

        List<Travel> list = repository.findByDestId(destId, null);
        for (Travel travel : list) {
            travel.setAuthor(userInfoService.get(travel.getUserId()));
        }
        return list;
    }


}
